Example usage for javax.crypto.spec IvParameterSpec IvParameterSpec

List of usage examples for javax.crypto.spec IvParameterSpec IvParameterSpec

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Introduction

In this page you can find the example usage for javax.crypto.spec IvParameterSpec IvParameterSpec.

Prototype

public IvParameterSpec(byte[] iv)

Source Link

Document

Creates an IvParameterSpec object using the bytes in iv as the IV.

Usage

From source file:OfficeAdministrator.Encrypt.java

public static String EncryptText(String RawText) {
    String EncText = "";
    byte[] keyArray = new byte[24];
    byte[] temporaryKey;
    String key = "developersnotedotcom";
    byte[] toEncryptArray = null;

    try {/*from  w  ww  . j av  a 2s .  c  o m*/

        toEncryptArray = RawText.getBytes("UTF-8");
        MessageDigest m = MessageDigest.getInstance("MD5");
        temporaryKey = m.digest(key.getBytes("UTF-8"));

        if (temporaryKey.length < 24) // DESede require 24 byte length key
        {
            int index = 0;
            for (int i = temporaryKey.length; i < 24; i++) {
                keyArray[i] = temporaryKey[index];
            }
        }

        Cipher c = Cipher.getInstance("DESede/CBC/PKCS5Padding");
        c.init(Cipher.ENCRYPT_MODE, new SecretKeySpec(keyArray, "DESede"), new IvParameterSpec(sharedvector));
        byte[] encrypted = c.doFinal(toEncryptArray);
        EncText = Base64.encodeBase64String(encrypted);

    } catch (Exception NoEx) {
    }

    return EncText;
}

From source file:org.sakuli.services.cipher.AesCbcCipher.java

public static IvParameterSpec createIV(final int ivSizeBytes, final Optional<SecureRandom> rng) {
    final byte[] iv = new byte[ivSizeBytes];
    final SecureRandom theRNG = rng.orElse(new SecureRandom());
    theRNG.nextBytes(iv);/*  ww  w . j  a v  a2 s.com*/
    return new IvParameterSpec(iv);
}

From source file:com.myapp.common.AES4MEncrypt.java

/**
 * //from   w  ww . j av  a2  s  . c  o  m
 * 
 * @param sSrc 
 * @param sKey KEY
 * @return
 * @throws Exception
 * @author cdduqiang
 * @date 201443
 */
public static String encrypt(String sSrc, String sKey) throws Exception {
    if (sKey == null) {
        log.error("Encrypt Key ??");
        throw new Exception("Encrypt Key ??");
    }

    byte[] raw = hex2byte(sKey);
    SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");
    Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
    IvParameterSpec iv = new IvParameterSpec("0102030405060708".getBytes());
    cipher.init(Cipher.ENCRYPT_MODE, skeySpec, iv);
    byte[] anslBytes = sSrc.getBytes(ENCODING);// string2AnslBytes(sSrc);
    byte[] encrypted = cipher.doFinal(anslBytes);
    return byte2hex(encrypted).toUpperCase();
}

From source file:com.hp.application.automation.tools.EncryptionUtils.java

public static String Decrypt(String text, String key) throws Exception {

    Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
    byte[] keyBytes = new byte[16];
    byte[] b = key.getBytes("UTF-8");
    int len = b.length;
    if (len > keyBytes.length)
        len = keyBytes.length;/*from w w w .  j a  v a  2  s . c o m*/
    System.arraycopy(b, 0, keyBytes, 0, len);
    SecretKeySpec keySpec = new SecretKeySpec(keyBytes, "AES");
    IvParameterSpec ivSpec = new IvParameterSpec(keyBytes);
    cipher.init(Cipher.DECRYPT_MODE, keySpec, ivSpec);
    byte[] results = cipher.doFinal(Base64.decodeBase64(text));

    return new String(results, "UTF-8");
}

From source file:com.lwr.software.reporter.utils.EncryptionUtil.java

public static String decrypt(String encrypted) {
    try {/*from   w  w  w.  ja  v  a 2 s  .  c  om*/
        IvParameterSpec iv = new IvParameterSpec(
                DashboardConstants.INIT_VECTOR.getBytes(DashboardConstants.ENCODING));
        SecretKeySpec skeySpec = new SecretKeySpec(
                DashboardConstants.INIT_KEY.getBytes(DashboardConstants.ENCODING),
                DashboardConstants.ALGORITHM);
        Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5PADDING");
        cipher.init(Cipher.DECRYPT_MODE, skeySpec, iv);
        byte[] original = cipher.doFinal(Base64.decodeBase64(encrypted));
        return new String(original);
    } catch (Exception ex) {
        ex.printStackTrace();
    }
    return null;
}

From source file:truelauncher.utils.CryptoUtils.java

public static String decryptString(String string)
        throws NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException, IllegalBlockSizeException,
        BadPaddingException, ClassNotFoundException, IOException, InvalidAlgorithmParameterException {
    byte[] keyBytes = getKey();
    SecretKeySpec key = new SecretKeySpec(keyBytes, "DES");
    IvParameterSpec ivSpec = new IvParameterSpec(ivBytes);
    Cipher cipher = Cipher.getInstance("DES/CBC/PKCS5Padding");
    cipher.init(Cipher.DECRYPT_MODE, key, ivSpec);
    String decryptedString = new String(cipher.doFinal(Base64.decodeBase64(string)));
    return decryptedString;
}

From source file:aajavafx.Kripto.java

public String encrypt(String plainText) throws Exception {
    Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
    SecretKeySpec key = new SecretKeySpec(encryptionKey.getBytes("UTF-8"), "AES");
    cipher.init(Cipher.ENCRYPT_MODE, key, new IvParameterSpec(IV.getBytes("UTF-8")));
    byte[] byteCipher = cipher.doFinal(plainText.getBytes("UTF-8"));
    Base64 base64 = new Base64();
    String stringToStore = new String(base64.encode(byteCipher));
    //byte[] restoredBytes = Base64.decode(stringToStore.getBytes());
    return stringToStore;
}

From source file:org.cryptomath.function.AESCryptoFunction.java

@Override
public String encrypt(final String message, final String keyAlias, final String ivAlias) throws Exception {
    AESConfig config = CryptoConfigSpec.getInstance().getAesConfig();
    Cipher cipher = Cipher.getInstance(config.getAlgorithm(), "BC");

    AESFunctionUtil util = new AESFunctionUtil();
    IvParameterSpec iv = new IvParameterSpec(util.getIV(ivAlias));

    SecretKeySpec keySpec = new SecretKeySpec(util.getSecretKey(keyAlias), config.getScheme());

    cipher.init(Cipher.ENCRYPT_MODE, keySpec, iv);

    byte[] cipherText = cipher.doFinal(message.getBytes());

    return new String(Base64.encodeBase64(cipherText));
}

From source file:com.bytecode.util.Crypto.java

private static byte[] encrypt(String keystring, String message, int bits) throws Exception {
    byte[] encValue = null;
    SecureRandom random = new SecureRandom();
    byte[] nonceBytes = new byte[8];
    random.nextBytes(nonceBytes);//from w w w .  j  av  a2  s  .com
    IvParameterSpec nonce = new IvParameterSpec(Arrays.copyOf(nonceBytes, 16));

    Key key = generateKey(keystring, bits);
    Cipher c = Cipher.getInstance(ALGORITHM);
    c.init(Cipher.ENCRYPT_MODE, key, nonce);
    byte[] ciphertextWithoutNonce = c.doFinal(message.getBytes("UTF-8"));
    encValue = Arrays.copyOf(nonceBytes, nonceBytes.length + ciphertextWithoutNonce.length);
    for (int i = 0; i < ciphertextWithoutNonce.length; i++) {
        encValue[i + 8] = ciphertextWithoutNonce[i];
    }

    return encValue;
}

From source file:com.netsteadfast.greenstep.util.EncryptorUtils.java

public static String decrypt(String key1, String iv1, String encrypted) {
    try {/*from  ww  w.  j av  a  2 s .  c o m*/
        IvParameterSpec iv = new IvParameterSpec(iv1.getBytes(Constants.BASE_ENCODING));
        SecretKeySpec skeySpec = new SecretKeySpec(key1.getBytes(Constants.BASE_ENCODING), "AES");
        Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5PADDING");
        cipher.init(Cipher.DECRYPT_MODE, skeySpec, iv);
        byte[] original = cipher.doFinal(Base64.decodeBase64(encrypted));
        return new String(original);
    } catch (Exception ex) {
        ex.printStackTrace();
    }
    return null;
}